Handle for a soldering iron



FIG. 1 is a left side elevational view of a handle for a soldering iron showing our new design, the right side being a mirror image thereof;

FIG. 2 is a bottom plan view;

FIG. 3 is a top plan view;

FIG. 4 is a front elevational view; and

FIG. 5 is a rear elevational view thereof.

The broken line showing of a soldering iron is for environmental purposes only and forms no part of the claimed design. 

The ornamental design for a handle for a soldering iron, as shown and described. 